PepEvolutionGlutathione
The body's master antioxidant tripeptide — safe for supplemental use, but FDA-warned against IV skin-brightening injection.
Verdict — C · Emerging / Mixed
An endogenous molecule with strong safety credentials at oral and topical doses — but the IV injection route that most buyers in this catalog context are considering carries an FDA safety warning, infection risk, and weak evidence for skin brightening. For antioxidant supplementation, the oral route is the rational choice.
Overview
Glutathione (GSH) is the most abundant endogenous antioxidant, a tripeptide (Glu-Cys-Gly) central to redox homeostasis. Supplemental and injectable forms are widely used off-label for skin brightening, immune support, and antioxidant loading. The FDA issued a safety warning in 2020 against IV glutathione marketed specifically for skin lightening, citing potential for allergic reactions, air embolism risk, and lack of evidence for this use. As an endogenous molecule, oral and topical use has a strong safety record; the IV injection route carries a higher risk burden.
PepScore Breakdown — the four axes
Evidence
35% weightHow strong is the published human science?
Sourcing & COA
30% weightOur moatCan a buyer obtain an independently-verified, high-purity version? — our proprietary layer.
Safety & Risk
25% weightWhat is the real-world harm potential?
Practicality
10% weightHow easy is it to actually run a verified version?
Sources & Citations
Every claim cites a primary source. Citations are machine-audited against NCBI — see methodology.
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